condition	mean	min	max
4 h after light	8.285923499999999	8.125019	8.446828
8 h after light	7.141563	7.047765	7.235361
12 h after light	7.724231	7.485491	7.962971
4 h after dark	7.6423000000000005	7.367254	7.917346
8 h after dark	7.807236	7.499396	8.115076
12 h after dark	8.010277	8.010277	8.010277